Scangauge recalibration - Tire size increase

[Kenny]

Stock tires on the 00, 01 are 245/60 R18 = 29.6"
(all sorts of neat info on the Federal Sticker in your drivers door frame.)

Mine are 265/70 R17= 31.6"

My Garmin tracks me at 10% error. Doing 66mph by GPS when speedo says 60mph.

[rowhard]

Thats right, I knew that 30.5 didn't look right. For some reason I was thinking they were 265, me dumb. Thanks for correcting my boo boo

[Riff Raff]

Hi Guys: If you want quick and accurate Tire Size Comparisons which also gives you the approximate differance in your speedometer -- go the the website of DISCOUNT TIRE on the web and then click on their TIRE CALCULATOR. It is truly amazing and takes all the guess work out. Type in the OEM Tire Size (found on 2000 & 2001 VX's) of 245/60R18 and then compare the differance to another size of interest. Incidentally, the tire brand that has the most diverse sizes of off-road tires that fit the OEM 18"x7" rim is: TOYO - OPEN COUNTRY A/T and M/T. Go to the TOYO TIRE website and print-out their size chart for the OPEN COUNTRY. You'll be impressed!

[taylorRichie]

the tire calculator at discount has my calibration off by about 10.6% I've been running my scanguage at 10%.

Direct Link: http://www.discounttire.com/dtcs/infoTireMath.dos

[twistedsymphony]

why not properly recalibrate your speedo

you know the wrong size also screws up your odometer and trip meters as well.

check the back of the gauges and look for an adjustment potentiometer, failing that change the gear on the speed sensor (costs $8 you subtract 1 tooth for every 3% gain you'd like)

failing that you can can get a digital adjustment module from Dakota Digital.

Dakota Digital SGI-5:
http://www.dakotadigital.com/index.c...rod/prd126.htm
That thing will let you tweak your speedo exactly.

When I'm driving, the last thing I want to do is math in my head to figure out what my gauges are saying

[taylorRichie]

Um scangauge does the math for you.